Can Zenith Blade move an exhausted unit, does this trigger combat, and would Symbol of the Solari trigger if the exhausted unit defeats some but not all defenders?

Ruling: Spells or abilities can move exhausted units. A combat starts whenever a unit is moved into a battlefield with an opponent's unit present, even if the moved unit is exhausted. Symbol of the Solari only triggers if a combat took place.

Sequence:

• Exhausted Fiora (5 might) is moved to battlefield with three enemy units (3 power, 2 power, 2 power)
• Combat occurs despite Fiora being exhausted
• Fiora defeats the 3 power unit and one 2 power unit
• Since defenders remain, Fiora is recalled
• Symbol of the Solari triggers because combat took place, affecting the remaining defender

Nuances:

• Units do not need to be ready to be moved by spells or abilities
• Exhausted units can still participate in combat when moved
• Symbol of the Solari triggers based on whether combat occurred, not on whether all units were defeated